9878855 has 8 divisors (see below), whose sum is σ = 13548192. Its totient is φ = 6774048.

The previous prime is 9878851. The next prime is 9878857. The reversal of 9878855 is 5588789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9878855 - 2² = 9878851 is a prime.

It is a super-2 number, since 2×9878855² = 195183552222050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141092 + ... + 141161.

It is an arithmetic number, because the mean of its divisors is an integer number (1693524).

Almost surely, 2^9878855 is an apocalyptic number.

9878855 is a deficient number, since it is larger than the sum of its proper divisors (3669337).

9878855 is a wasteful number, since it uses less digits than its factorization.

9878855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282265.

The product of its digits is 806400, while the sum is 50.

The square root of 9878855 is about 3143.0645873097. The cubic root of 9878855 is about 214.5699353393.

The spelling of 9878855 in words is "nine million, eight hundred seventy-eight thousand, eight hundred fifty-five".